docs: def get_overlaps(self, offset, length):
      """Returns chunks overlapped with the given range.
  
      Args:
        offset (int): Begin offset of the range.
        length (int): Length of the range.
  
      Returns:
        Overlapped chunks. (:obj:`budou.chunk.ChunkList`)
      """
      # In case entity's offset points to a space just before the entity.
      if ''.join([chunk.word for chunk in self])[offset] == ' ':
        offset += 1
      index = 0
      result = ChunkList()
      for chunk in self:
        if offset < index + len(chunk.word) and index < offset + length:
          result.append(chunk)
        index += len(chunk.word)
      return result